Party System Closure maps trends in interparty relations in Europe from 1848 until 2019. It investigates how the length of democratic experience, the institutionalization of individual parties, the fragmentation of parliaments, and the support for anti-establishment parties, shape the degree of institutionalization of party systems. The analyses presented answer the questions of whether predictability in partisan interactions is necessary for the survival of democratic regimes and whether it improves or undermines the quality of democracy. The developments of party politics at the elite level are contrasted with the dynamics of voting behaviour. The comparisons of distinct historical periods and of macro-regions provide a comprehensive picture of the European history of party competition and cooperation. The empirical overview presented in the book is based on a novel conceptual framework and features party composition data of more than a thousand European governments. Party systems are analysed in terms of poles and blocs, and the degree of closure and of polarization is related to a new party system typology. The book demonstrates that information collected from partisan interactions at the time of government formation can reveal changes that characterise the party system as a whole. The empirical results confirm that the Cold War period (1945-1989) was exceptionally stable, while the post-Berlin-Wall era shows signs of disintegration, although more at the level of voters than at the level of elites. After three decades of democratic politics in Europe (1990-2019), the West and the South are looking increasingly like the East, especially in terms of the level of party de-institutionalization. The West and the South are becoming more polarised than the East, but in terms of parliamentary fragmentation, the party systems of the South and the East are converging, while the West is diverging from the rest with its increasingly high number of parties. As far as our central concept, party system closure, is concerned, thanks to the gradual process of stabilization in the East, and the recent de-institutionalization in the West and South, the regional differences are declining. Comparative Politics is a series for researchers, teachers, and students of political science that deals with contemporary government and politics. Global in scope, books in the series are characterised by a stress on comparative analysis and strong methodological rigour. The series is published in association with the European Consortium for Political Research. For more information visit: www.ecprnet.eu. The series is edited by Susan Scarrow, Chair of the Department of Political Science, University of Houston, and Jonathan Slapin, Professor of Political Institutions and European Politics, Department of Political Science, University of Zurich.

Party System Closure maps trends in interparty relations in Europe from 1848 until 2019. It investigates how the length of democratic experience, the institutionalization of individual parties, the fragmentation of parliaments, and the support for anti-establishment parties, shape the degree of institutionalization of party systems. The analyses presented answer the questions of whether predictability in partisan interactions is necessary for the survival of democratic regimes and whether it improves or undermines the quality of democracy. The developments of party politics at the elite level are contrasted with the dynamics of voting behaviour. The comparisons of distinct historical periods and of macro-regions provide a comprehensive picture of the European history of party competition and cooperation. The empirical overview presented in the book is based on a novel conceptual framework and features party composition data of more than a thousand European governments. Party systems are analysed in terms of poles and blocs, and the degree of closure and of polarization is related to a new party system typology. The book demonstrates that information collected from partisan interactions at the time of government formation can reveal changes that characterise the party system as a whole. The empirical results confirm that the Cold War period (1945-1989) was exceptionally stable, while the post-Berlin-Wall era shows signs of disintegration, although more at the level of voters than at the level of elites. After three decades of democratic politics in Europe (1990-2019), the West and the South are looking increasingly like the East, especially in terms of the level of party de-institutionalization. The West and the South are becoming more polarised than the East, but in terms of parliamentary fragmentation, the party systems of the South and the East are converging, while the West is diverging from the rest with its increasingly high number of parties. As far as our central concept, party system closure, is concerned, thanks to the gradual process of stabilization in the East, and the recent de-institutionalization in the West and South, the regional differences are declining. Comparative Politics is a series for researchers, teachers, and students of political science that deals with contemporary government and politics. Global in scope, books in the series are characterised by a stress on comparative analysis and strong methodological rigour. The series is published in association with the European Consortium for Political Research. For more information visit: www.ecprnet.eu. The series is edited by Susan Scarrow, Chair of the Department of Political Science, University of Houston, and Jonathan Slapin, Professor of Political Institutions and European Politics, Department of Political Science, University of Zurich.

This book offers a systematic and far-reaching account of party system institutionalization in Western Europe. Drawing upon a wide array of data and through a comparison of 20 countries from the end of WWII to 2019 across three arenas of party competition (electoral, parliamentary, and governmental ones), the empirical analysis shows that, over the past decade, the level of institutionalization in the Western European party systems has dramatically declined compared with previous decades. Electoral, parliamentary, and – in some cases – governmental instability and unpredictability have reached record-high levels. Although the impact of the 2008 Great Recession has certainly worked as a catalyst, this process of de-institutionalization has been mainly driven by long-term factors, such as cleavage decline and length of democratic experience. Moreover, its consequences are relevant not only for the relationship between parties and voters, but also for the very quality of democracy, as party system deinstitutionalization causes a decline in the citizens’ satisfaction of the way democracy works and even an erosion of the ‘objective’ democratic standards. In a nutshell, Western Europe, once seen as the land of stability and the cradle of democracy, may have become the land of party system deinstitutionalization and incipient democratic backsliding.

Mair examines how we interpret the evidence of change and stability in modern parties and party systems. Focusing on processes of political adaptation and control, he also looks at how parties generate or freeze their own momentum.

Paul Webb’s Advanced Introduction to Party Systems expertly draws upon major theories and concepts, existing literature, and cutting-edge empirical evidence to present an authoritative contribution to the field of party systems. Webb rigorously explores the different types of party systems that exist, the role of socio-political cleavages and electoral systems in shaping them, their evolution over time, and their significance for government and the wider functioning of democracy.

This open access book focuses on the nexus between “party system stability” and “democratic consolidation”, using Slovenia as a case study. Its findings are presented from a comparative perspective to illustrate the commonalities and differences found in research on Central European post-socialist countries and former Yugoslav countries. On the one hand, Slovenia’s characteristics (including the characteristics of its transition to democracy) are far more similar to those of Central European post-socialist countries than Western Balkan countries. On the other, Slovenia shares some similarities with other parts of the former Yugoslavia – especially its experiences with the political system of socialist self-management, elements of a market economy under socialism, and war following the end of socialism (albeit the conflict in Slovenia was very short and rather mild in comparison to those in other parts of socialist Yugoslavia). Slovenia’s experiences with rapid but limited democratic backsliding under the Janša government (March 2019–June 2022) were halted by the 2022 national election – in contrast to the more widely known cases of Hungary and Poland, where such backsliding took place incrementally over a longer period of time that included several election cycles. Danica Fink-Hafner is Professor at the University of Ljubljana, Slovenia.

Party systems are crucial elements for the functioning of political systems and representative democracies. With several European countries experiencing significant changes recently, it is necessary to update our knowledge. This volume analyses party system changes in Europe in the 21st century by considering several dimensions such as interparty competition, the cleavage structure, electoral volatility and the emergence of new actors. The book describes the principal continuities and changes in party systems in Europe; analyzes the main explanations for these trends; and assesses the impact of the crisis on the patterns observed. By considering a wide range of Western and Eastern European countries, and focusing on the ‘parameters’ of party system change, this book seeks to fill an important gap in the literature through a comparative analysis of the evolution of party systems in Europe over the last decades. This book will be of key interest to scholars and students of political parties, party systems and politics, electoral behavior as well as more broadly to European politics, comparative politics. political representation and the quality of democracies.